Very soon I will probably be buying a new system to replace my laptop for gaming.
Im looking at something like a Shuttle or another SFF case (Silverstone Sugo or X Qpack) so it will be easy for me to cart around to LAN's etc.

The only problem is I'd like to get the new ATI X1900 XT-X, now in the shuttle there is only a 350 Watt PSU, in games the ATI will consume at most 300 Watts, will the shuttle be able to handle this as well as the other components while gaming or would it be better going with another SFF case that can accomidate a normal ATX PSU?